Oh, oh indeed. I see the problem since the answer I was looking for as an example is your answer. I wondered why it was never deleted and it hadn't crossed my mind that you were stuck with it.
How can I list my open ports on Debian?
Yes, we've beat the dead horse in downvotes and it IS wrong that an answerer is stuck with that. As a general matter of course we don't want to have accepted answers be deletable, but some answer does need to apply to fixing this.